Enhanced light harvesting of nitride-based nanopillars covered with ZnO using indium-tin oxide nanowhiskers

Lung Hsing Hsu, Chien Chung Lin, Hsin Ying Lee, Jhih Kai Huang, Hau Vei Han, Yu Lin Tsai, Peichen Yu, Hao Chung Kuo, Ching Ting Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Nitride-based nanopillars were successfully fabricated by nanoimprint lithography. A nanowhisker of indium-tin oxide (ITO) deposited by on oblique evaporation method was investigated in nitride-based nanopillars and thin ZnO layers grown by atomic layer deposition (ALD). From the results of field-emission scanning electron microscopy (SEM) measurement, it was found that ITO whiskers grew on nitride-based nanopillars covered with ZnO. Moreover, from the results of UV-visible spectrophotometry and bidirectional reflectance distribution function (BRDF) measurements, it was found that this hybrid structure of ITO nanowhiskers above a ZnO medium enhanced the broadband and angle-independent antireflection in the range between 380 and 600nm. We used the hybrid design of the ITO/ZnO structure to achieve the lowest reflectance value between 3.8 and 10.9% in a quantum well absorption range.

Original languageEnglish
Article number04ER10
JournalJapanese Journal of Applied Physics
Volume53
Issue number4 SPEC. ISSUE
DOIs
Publication statusPublished - 2014 Apr

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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